Robert hunter



' a coil-spring and ordinary gearing.

ROBERT H'UNTERQOF NEW YORK, N. Y. Leners Primm No. 84,628, am@ Damm 1, 186s.

roy-FISH.

, The Schedule referred to in these Letters Patent and making part'of the same.-

Be 'it known that I, ROBERT HUNTER, of 9 Bre'- voort Place, in the city of New York, doctor of medicine, have invented 4a Propeller for Toys, intended more particularly for mechanical sh', but also applicable to toy-boats; and I hereby declare that the following is a true and exact description thereof, reference being had to the accompanying drawing.

The peculiarity of this invention consists in a vibrating tail, made of thin elastic material, and operated by The tail may be made of steel, whalebone, or other suitable material, and should be rigidly attached to the rudder-post of a toy-boat, or at the point of junction of the tail to the body of a toy-fish. This post may be made to revolve in journals at each end, or be hinged by wire loops. Y

From this post a short arm or lever projects laterally, to which the shaft is connected by a movable joint. This shaft is operated bya crank and ordinary springwork within the body of the fish or toy-boat.

Figure I represents the sides of a toy-iish with the propelling-tail adjusted.

A is the body of the sh;

B, the hinged tail;

0, the short arm or lever;

D, the shaft; f

E, the crank; and

F, the'spring and cog-wheel gearing.

Figure II shows a vertical view of the sh with the tail adjusted. f

It will be seen -that when the crank turns, it projects the shaft out, and draws it in with each revolu! tion.

This shaft being connected with the short arm or lever, causes the flexible tail to move laterally, and to bend in thegmanner indicated by the dotted lines e,

and j'. This gives the fish the appearance of life when placed in water, and causesit to swim with precisely the mot-ions of the natural sh.

Figure III represents the best form in which the tail is made, tapering gradually from the point of junction with the body of the ish down to ane iihny edge. This causes it t'o bend chieflyat the extreme end, and gives greater propulsion from each stroke.

The same mode of construction applies to toy-boats,A on which it is proposed to use it as a propeller.

What I claim as new, and desire to secure by Letters Patent, is as follows The application of the vibrating' tail as a propeller for mechanical iish, toy-boats, &c.,.substantially as and for the purpose stated.

' New York, October 24, 1868.1'

. ROBERT HUNTER.

Witnesses:

Oo'rnvros KNIGHT, WM. H. BRERETON, Jr. 

